Explain the process of eutrophication.

Nitrates and phosphates are leached into a slow-moving water body (e.g. a lake). This results in an algal bloom on the surface of the water body. The algae block sunlight and prevent it from reaching aquatic plants beneath them. Consequently, these aquatic plants die due to a lack of photosynthesis. Microorganisms (saprobionts) thrive from decaying these dead plants . These microorganisms carry out a lot of aerobic respiration, which depletes the oxygen supply in the river. Aquatic animals (e.g. fish) die from a lack of oxygen for aerobic respiration.

VB
Answered by Vishal B. Biology tutor

2857 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

What is the structure of the human gas exchange system- how do we breathe in and out?


Glucose is filtered out of the blood, but is not found in urine. Explain why glucose is not present in urine


How does a vaccine lead to the production of antibodies and why does this provide immunity?


Describe how fertiliser run-off can cause damage to a lake's ecosystem.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences